Filtering apparatus.



K. KIEFEE.

PILTERING APPARATUS.

APPLICATION FILED DEG. 20. 1910.

1,123,310. Patented Jan.5, 1915;

I Z SHEETS-$15331 1.

Witnesses: l'nvenzor THE NORRIS PETERS 130.. PHOTO-LITHIUM WASHINGTON. D c

KARL KIEFER, OF CINCINNATI, OHIO.

FILTERING APPARATUS.

Specification of Letters Patent.

Patented J an. 5, 1915.

Original application filed April 16, 1906, Serial No. 311,972. Renewed February 23, 1911, Serial No. 610,387.

Divided and this application filed December 20, 1910.

To all whom it may concern Be it known that 1, KARL Kmrnu, a citizen of the United States, residing at (incinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Filtering Apparatus, of which the following is a specification.

My invention relates to filtering apparatus and the object of the invention is to provide simplified conducting means between layers of filtering material.

My invention consists in the parts and in the details of construction and arrangement of parts hereinafter more fully described and claimed.

In the drawings: Figure 1 is a vertical sectional elevation on the line to of Fig. 9., showing the filtering apparatus provided with my improvement. Fig. 2 is a horizon tal section on the line H of Fig. 1. Fig. 3 is a longitudinal section on the line 3 of Fig. 4:, through a set of plates forming a liquid conductor. Fig. 4 is a view similar to Fig. 2, enlarged and with parts broken away.

As illustrated, the filtermass A is packed in the casing B, of square shape, which thus permits the use of square metal sheets for the liquid conductors K and L. which are embedded in the filtermass. This filtermass is packed directly against the sides of the cusing B. except where the inlet passage 12 is provided, and the outer edges of the liquid conductors K conform substantially to the casing walls except at the side where the inlet passage is formed; there theyterminate with the filtermass and do not project into the inlet passage. This arrangement of the inl t passage permits it to be most conveniently formed by inserting an inside or false wall N into the casing, where the passage is to be formed, and then packing the filtermass by introducing successive lavers of filtering material with the liquid conductors K and L interposed between them and pressing down with the packing-piston I, acted upon through the rack F and the pinion G by the handwheel H. It will be understood that after the casing is filled with the filter layers, the packing-piston I is withdrawn and swung out of the way, and the cover is clamped on the casing by swinging it around on the yoke D, but before the cover is applied, the inner wall N is withdrawn from the casing, leaving the inlet passage 12 with one of its walls composed Serial No. 598,362.

of the material of the adjacent parts of the transverse filter layers, and with the inlet liquid conductors K communicating directly with it; the communication from the inlet pipe 13 to the inlet passage 12 is through the lowermost liquid conductor K, which rests on the bottom of the casing B. The outlet of the casing consists in the perforated tube 0, centrally located and having the inner edges of the outlet liquid conductors L adjacent thereto. By having this tube rectangular. as shown, the outlet conductors 1 are held squarely within the filter.

The inside or false wall N, shown in Figs. 1 and 2, is coextensive with the side wall of the casing B, and is in the form of a somewhat flexible plate l i. This plate is supported away from the casing by upright strips or ribs 15, preferably permanently secured in the corners of the casing, and by an upright removable strip 16 supporting the plate in the middle.

As illustrated in Fig. i, the inside wall N, coextensive with the wall of the casing, comprises two sections 14, which meet substantially at the middle of said wall of the casing, and are supported away therefrom by the upright strips or ribs 15, and by the upright removable strip 16, which supports both of the plates where they meet in the middle.

The plates 14 or 1% are imperforate, to adapt them for being readily withdrawn after the packing is completed. The strip 16 is provided with a suitable projection 17 at its upper end to form a handle for withdrawing it. The plates 14 or sections 14, when separated from the filtermass, may be readily taken hold of to be lifted out.

The inlet passage thus formed, with the wall composed of the filtering material itself and of the exposed edges of the liquid conductors, offers uninterrupted means of entrance for the cloudy liquid, and this liquid entering under pressure, tends to preserve the formation of the wall of the filtering material throughout the filtering operation.

The outlet conductors K and the inlet conductors L are constructed substantially the same. An outlet conductor K is shown in section in Fig. 3, and in exposed plan view in Fig. 4E, and consists in a plate 18 having embossed parallel interrupted ridges 19, in contact with which ridges is a plane plate 20. Either one, or, as shown, both of the plates, may be pervious. Thus, the ridges 19 separate the plates and form a series of liquid passages between the plates, these passages being parallel in one direction across the'plate, and being connected to each other at intervals throughout their parallel extent, by the interruptions between the ridges, at right angles to such parallel extent. The liquid enters these passages between the plates, in the outlet conductor, or leaves them. in the inlet conductor, through perforations in the plates, where they meet the filter layers in which the plates are embedded. As shown, the interruptions in the ridges are staggered. Such series of ridges render a plate very self-sustaining, which is especially desirable in handling; the staggered arrangement of the interruptions in the ridges adds to the stiffness of the plate.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In filtering apparatus, liquid conductors consisting each of two perforated plates, one of which has discontinuous protuberances spacing the plates apart.

2. In filtering apparatus, a liquid conductor consisting of two perforated plates, one of which has discontinuous embossed protuberances whereby universal liquid conducting spaces are formed between the plates.

3. In filtering apparatus comprising a casing and transverse filter layers therein, a liquid conductor embedded between the filter layers, consisting of a plate having embossed parallel interrupted ridges, and a plane plate in contact with said ridges, one of the plates being pervious.

4:. In filtering apparatus comprising a Copies of this patent may be obtained for casing and transverse filter layers therein, a liquid conductor embedded between the filter layers, consist ng of a plate having embossed parallel interrupted ridges, and

a plane plate in contact with said ridges,

one of the plates being pervious, and the in- 6. In a. filtering apparatus, a flat liquid conductor consisting of two perforated metal plates, one of 'theplates beingembossed to space the plates apart and form liquid-conducting channels between the plates.

7. In a filtering apparatus, a fiat'liquidconductor consisting of two perforated metal plates so formed relativeqto each other as to space the plates apart and] form liquid-conducting channels between the plates. v

' S. In a filtering apparatus, a fiat liquidconductor consisting of two perforated metal plates with integral spacing means to space the plates apart and form liquid-conducting channels between the plates.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

KARL KIEFER..

lVitnesses CLARENCE Pnnnnw, ERNEST E. FINCH.

five cents each. by addressing the (lominissioner oi Patents,

Washington, D. C." 

